Magnesium sulfite

Magnesium sulfite
Names
IUPAC name
Magnesium sulfite
Other names
Magnesium sulphite
Identifiers
CAS Number
  • 7757-88-2 checkY
ChemSpider
  • 2282946
ECHA InfoCard 100.028.932 Edit this at Wikidata
EC Number
  • 231-825-6
PubChem CID
  • 3014583
UNII
  • 792J6K230W checkY
CompTox Dashboard (EPA)
  • DTXSID50884418 Edit this at Wikidata
Properties
Chemical formula
 MgSO
3 (anhydrous); MgSO
3·6H
2O
Molar mass 104.368200 g/mol (anhydrous)
212.4599 g/mol (hexahydrate)
Solubility in water
 5.2g/L at 298.2K (hexahydrate)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Chemical compound

Magnesium sulfite is the magnesium salt of sulfurous acid with the formula MgSO
3. Its most common hydrated form has 6 water molecules making it a hexahydrate, MgSO
3·6H
2O. When heated above 40 °C (104 °F), it is dehydrated to magnesium sulfite trihydrate, or MgSO
3·3H
2O.[1] The anhydrous form is hygroscopic, meaning that it readily absorbs water from the air.

See also

  • Calcium sulfite
  • Magnesium sulfate (Epsom salt)

References

  1. ^ Nývlt, J., "Solubilities of Magnesium Sulfite," Journal of Thermal Analysis and Calorimetry, Volume 66, Number 2 / November, 2001

solubility tables of MgSO3 hydrates PDF[1]

  • v
  • t
  • e
Magnesium compounds
  • MgB2
  • MgBr2
  • MgCO3
  • MgC2O4
  • MgC6H6O7
  • C12H10Mg3O14
  • C4H8MgN2O4
  • MgC14H10O4
  • MgCl2
  • Mg(ClO3)2
  • Mg(ClO4)2
  • MgF2
  • MgH2
  • Mg(HCO3)2
  • Mg(HCO2)2
  • MgHPO4
  • Mg(H2PO4)2
  • MgI2
  • Mg(NO3)2
  • MgO
  • MgO2
  • Mg(OH)2
  • Mg3(PO4)2
  • MgPo
  • MgSe
  • MgS
  • MgSO3
  • MgSO4
  • MgU2O7
  • Mg2Al3
  • Mg2Si
  • Mg5Ga2
  • Mg2SiO4
  • Mg2Si3O8
  • Mg3N2
  • Mg2(CrO4)2
  • C
    24    H
    46    MgO
    4
  1. ^ [1], H.D.Lutz, Dept. of Chemistry, University of Slegen.